JP6770542B2 - Power supply - Google Patents

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JP6770542B2
JP6770542B2 JP2018029830A JP2018029830A JP6770542B2 JP 6770542 B2 JP6770542 B2 JP 6770542B2 JP 2018029830 A JP2018029830 A JP 2018029830A JP 2018029830 A JP2018029830 A JP 2018029830A JP 6770542 B2 JP6770542 B2 JP 6770542B2
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groove
stacking direction
opening surface
portions
power supply
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JP2019145396A (en
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龍 館
龍 館
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority to JP2018029830A priority Critical patent/JP6770542B2/en
Priority to CN201910038672.4A priority patent/CN110190213B/en
Priority to US16/271,896 priority patent/US20190259987A1/en
Publication of JP2019145396A publication Critical patent/JP2019145396A/en
Priority to US16/798,782 priority patent/US11495858B2/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/231—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks having a layered structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Artificial Intelligence (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Description

本発明は、電源装置に関する。詳細には、本発明は、複数の単電池セルが積層された組電池を有する電源装置に関する。 The present invention relates to a power supply device. More specifically, the present invention relates to a power supply device having an assembled battery in which a plurality of cell cells are stacked.

従来、ハイブリッド車や電気自動車等に搭載される電源装置は、複数の単電池セルが積層された組電池（バッテリモジュール）を有する。組電池（バッテリーモジュール）は、例えば、所定のケースに複数の単電池セルを収容して構成されている。 Conventionally, a power supply device mounted on a hybrid vehicle, an electric vehicle, or the like has an assembled battery (battery module) in which a plurality of cell cells are stacked. The assembled battery (battery module) is configured by accommodating a plurality of cell cells in a predetermined case, for example.

ここで、電源装置の性能向上が求められ、例えば、電源装置における体積エネルギ密度を向上が求められている。電源装置における体積エネルギ密度を向上させるためには、複数の単電池セルが積層された組電池を筐体に直接収容する技術が有効である。 Here, improvement in the performance of the power supply device is required, and for example, improvement in the volumetric energy density in the power supply device is required. In order to improve the volumetric energy density in the power supply device, it is effective to directly accommodate the assembled battery in which a plurality of cell cells are stacked in the housing.

しかし、複数の単電池セルが積層された組電池を筐体に直接収容する場合、筐体における収容部に隙間なく、かつ、収容部の壁部からの反力（保持荷重）により固定された状態で組電池を収容させる必要がある。 However, when an assembled battery in which a plurality of cell cells are stacked is directly housed in the housing, it is fixed by a reaction force (holding load) from the wall part of the housing part without a gap in the housing part in the housing. It is necessary to accommodate the assembled battery in the state.

これに対し、例えば、電池セルを積層し、かつ積層方向に圧縮した状態で収納部に挿入する技術が開示されている（例えば、特許文献１参照）。 On the other hand, for example, a technique of stacking battery cells and inserting them into a storage portion in a state of being compressed in the stacking direction is disclosed (see, for example, Patent Document 1).

特開２０１７−１１１８９３号公報Japanese Unexamined Patent Publication No. 2017-111893

しかし、特許文献１には、積層された電池セルを積層方向に圧縮した状態で収容部に挿入する技術は開示されているが、製造工程における具体的な方法や該方法に適した各種部品の構造等については開示されていない。 However, although Patent Document 1 discloses a technique of inserting stacked battery cells into a housing portion in a state of being compressed in the stacking direction, a specific method in a manufacturing process and various parts suitable for the method are used. The structure etc. are not disclosed.

特に、現実の製造においては製造ロボット等が使用されており、製造ロボット等による上述の方法及び該方法に適した各種部品の構造等に関する技術開発が求められている。 In particular, manufacturing robots and the like are used in actual manufacturing, and there is a demand for technological development related to the above-mentioned methods by manufacturing robots and the like and the structures of various parts suitable for the methods.

本発明は、複数の単電池セルが積層された組電池を積層方向に圧縮した状態で収容するのに適した収容部を有する電源装置及び該電源装置の製造方法に関する。 The present invention relates to a power supply device having an accommodating portion suitable for accommodating an assembled battery in which a plurality of cell cells are stacked in a compressed state in the stacking direction, and a method for manufacturing the power supply device.

（１）本発明に係る電源装置（例えば、後述の電源装置１）は、開口面（例えば、後述の第１開口面１６、第２開口面１７、第３開口面１８、及び第４開口面１９）を有する槽状の収容部（例えば、後述の第１収容部１１、第２収容部１２、第３収容部１３、及び第４収容部１４）が形成された筐体（例えば、後述の筐体１０）と、複数の単電池セル（例えば、後述の単電池セル４０）を積層した柱状の組電池（例えば、後述の第１組電池３１、第２組電池３２、第３組電池３３、及び第４組電池３４）と、を備え、前記組電池は、積層方向（例えば、後述の積層方向Ｘ）両端側の第１端部（例えば、後述の第１端部３１ａ，３２ａ，３３ａ，３３ａ）及び第２端部（例えば、後述の第２端部３１ｂ，３２ｂ，３３ｂ，３４ｂ）と前記収容部のうち対向する第１内壁部（例えば、後述の第１内壁部１１ａ，１２ａ，１３ａ，１４ａ）及び第２内壁部（例えば、後述の第２内壁部１１ｂ，１２ｂ，１３ｂ，１４ｂ）との間で作用する保持荷重によって前記収容部内に保持されるものであって、前記第１及び第２内壁部には、それぞれ、前記開口面と連通するとともに当該開口面に対し垂直に延び、かつ前記積層方向に対し平行な断面視では有底又は無底の凹状である第１溝部（例えば、後述の第１溝部２１，２３，２５，２７）及び第２溝部（例えば、後述の第２溝部２２，２４，２６，２８）が形成されていることを特徴とする。 (1) The power supply device according to the present invention (for example, the power supply device 1 described later) has an opening surface (for example, a first opening surface 16, a second opening surface 17, a third opening surface 18, and a fourth opening surface described later). A housing (for example, described later) in which a tank-shaped accommodating portion (for example, the first accommodating portion 11, the second accommodating portion 12, the third accommodating portion 13, and the fourth accommodating portion 14 described later) having the 19) is formed. A columnar set battery (for example, the first set battery 31, the second set battery 32, and the third set battery 33 described later) in which a housing 10) and a plurality of cell cells (for example, the cell cell 40 described later) are laminated. , And a fourth assembled battery 34), and the assembled battery is provided with first end portions (for example, first end portions 31a, 32a, 33a described later) on both ends in the stacking direction (for example, stacking direction X described later). , 33a) and the second end (for example, the second end 31b, 32b, 33b, 34b described later) and the first inner wall portion (for example, the first inner wall portion 11a, 12a described later) facing the accommodating portion. It is held in the accommodating portion by a holding load acting between the 13a, 14a) and the second inner wall portion (for example, the second inner wall portions 11b, 12b, 13b, 14b described later), and is held in the accommodating portion. In the second inner wall portion, a first groove portion (a bottomed or bottomless concave portion that communicates with the opening surface, extends perpendicularly to the opening surface, and is parallel to the stacking direction, respectively, is formed. For example, the first groove portions 21, 23, 25, 27) and the second groove portion (for example, the second groove portions 22, 24, 26, 28 described later), which will be described later, are formed.

（２）この場合、前記第１及び第２溝部は、前記開口面から前記収容部の底面（例えば、後述の底面１１ｅ）まで延びることが好ましい。 (2) In this case, it is preferable that the first and second groove portions extend from the opening surface to the bottom surface of the accommodating portion (for example, the bottom surface 11e described later).

（３）この場合、前記組電池は、各単電池セルの２つの電極（例えば、後述の電極４１，４２）が平面視で前記積層方向に沿って列状で配置されるように前記収容部内に設けられ、前記第１及び第２溝部は、前記平面視では前記２つの電極列の間に形成されていることが好ましい。 (3) In this case, in the assembled battery, the two electrodes (for example, electrodes 41 and 42 described later) of each cell are arranged in a row along the stacking direction in a plan view. The first and second groove portions are preferably formed between the two electrode rows in the plan view.

（４）この場合、前記第１及び第２溝部のうち少なくとも何れかには、前記組電池に接続される部材が設けられていることが好ましい。 (4) In this case, it is preferable that at least one of the first and second groove portions is provided with a member connected to the assembled battery.

（５）本発明に係る製造方法は、開口面（例えば、後述の第１開口面１６、第２開口面１７、第３開口面１８、及び第４開口面１９）を有する槽状の収容部（例えば、後述の第１収容部１１、第２収容部１２、第３収容部１３、及び第４収容部１４）が形成された筐体（例えば、後述の筐体１０）と、複数の単電池セル（例えば、後述の単電池セル４０）を積層した柱状の組電池（例えば、後述の第１組電池３１、第２組電池３２、第３組電池３３、及び第４組電池３４）と、を備え、前記組電池は、積層方向（例えば、後述の積層方向Ｘ）両端側の第１端部（例えば、後述の第１端部３１ａ，３２ａ，３３ａ，３３ａ）及び第２端部（例えば、後述の第２端部３１ｂ，３２ｂ，３３ｂ，３４ｂ）と前記収容部のうち対向する第１内壁部（例えば、後述の第１内壁部１１ａ，１２ａ，１３ａ，１４ａ）及び第２内壁部（例えば、後述の第２内壁部１１ｂ，１２ｂ，１３ｂ，１４ｂ）との間で作用する保持荷重によって前記収容部内に保持される電源装置（例えば、後述の電源装置１）を製造する方法であって、前記第１及び第２内壁部には、それぞれ、前記開口面と連通するとともに当該開口面に対し垂直に延び、かつ前記積層方向に対し平行な断面視では有底又は無底の凹状である第１溝部（例えば、後述の第１溝部２１，２３，２５，２７）及び第２溝部（例えば、後述の第２溝部２２，２４，２６，２８）が形成されており、第１アーム部（例えば、後述の第１アーム部１１０）及び第２アーム部（例えば、後述の第２アーム部１２０）で前記組電池を挟持し、前記第１及び第２端部に前記積層方向に沿った予圧力を加えながら前記組電池を把持する工程と、前記第１及び第２アーム部で前記組電池を把持した状態で、前記第１及び第２アーム部を前記開口面側から前記第１及び第２溝部に挿入する工程と、前記第１及び第２アーム部による前記予圧力を解除した後、前記第１及び第２アーム部を前記第１及び第２溝部から抜き出す工程と、を備えることを特徴とする。 (5) The manufacturing method according to the present invention is a tank-shaped accommodating portion having an opening surface (for example, a first opening surface 16, a second opening surface 17, a third opening surface 18, and a fourth opening surface 19 described later). (For example, the housing (for example, the housing 10 described later) in which the first housing portion 11, the second housing portion 12, the third housing portion 13, and the fourth housing portion 14 described later are formed, and a plurality of single units With columnar assembled batteries (for example, first set battery 31, second set battery 32, third set battery 33, and fourth set battery 34) in which battery cells (for example, a cell 40 described later) are laminated. , The assembled battery includes first end portions (for example, first end portions 31a, 32a, 33a, 33a described later) and second end portions (for example, later-described first end portions 31a, 32a, 33a, 33a) on both ends in the stacking direction (for example, stacking direction X described later). For example, the second end portions 31b, 32b, 33b, 34b described later and the first inner wall portion (for example, the first inner wall portions 11a, 12a, 13a, 14a described later) and the second inner wall portion facing each other in the accommodating portion. (For example, it is a method of manufacturing a power supply device (for example, a power supply device 1 described later) that is held in the accommodating portion by a holding load acting between the second inner wall portions 11b, 12b, 13b, 14b described later). The first and second inner wall portions have a bottomed or bottomless concave shape in a cross-sectional view that communicates with the opening surface, extends perpendicularly to the opening surface, and is parallel to the stacking direction, respectively. A first groove portion (for example, first groove portion 21, 23, 25, 27 described later) and a second groove portion (for example, second groove portion 22, 24, 26, 28 described later) are formed, and a first arm portion is formed. (For example, the first arm portion 110 described later) and the second arm portion (for example, the second arm portion 120 described later) sandwich the assembled battery, and the first and second end portions are along the stacking direction. The step of gripping the assembled battery while applying prepressure, and the first and second arm portions of the first and second arm portions from the opening surface side while the assembled battery is gripped by the first and second arm portions. A step of inserting into the second groove portion and a step of extracting the first and second arm portions from the first and second groove portions after releasing the prepressure by the first and second arm portions are provided. It is characterized by.

（６）この場合、前記第１及び第２アーム部を前記第１及び第２溝部から抜き出した後、前記第１及び第２溝部の少なくとも何れかに前記組電池に接続される部材を設ける工程をさらに備えることが好ましい。 (6) In this case, after the first and second arm portions are extracted from the first and second groove portions, a step of providing a member connected to the assembled battery in at least one of the first and second groove portions. It is preferable to further provide.

（１）本発明の電源装置は、開口面を有する槽状の収容部が形成された筐体と、この収容部内に保持された組電池と、を備える。筐体の収容部のうち組電池の積層方向両端側の第１内壁部及び第２内壁部には、それぞれ開口面と連通するとともにこの開口面に対し垂直に延び、かつ積層方向に対し平行な断面視では有底又は無底の凹状である第１溝部及び第２溝部が形成されている。また組電池は、積層方向両端側の第１端部及び第２端部と上記第１内壁部及び第２内壁部との間で作用する保持荷重によって、収容部内に保持される。本発明の電源装置によれば、組電池に積層方向に沿って荷重を作用させるためのホルダ等を用いることなく、組電池を積層方向に沿って圧縮した状態で筐体の収容部に直接搭載することができる。なおこのように組電池を収容部に搭載するには、組電池の積層方向両端側に設けられたアームを用いて、積層方向に沿って予圧力を作用させながら、組電池をアームとともに収容部に収容させる必要がある。これに対し本発明の電源装置によれば、第１内壁部及び第２内壁部に形成された第１溝部及び第２溝部が上記アームの逃げ溝となるので、組電池を積層方向に沿って圧縮した状態で筐体の収容部に直接搭載することができる。 (1) The power supply device of the present invention includes a housing in which a tank-shaped accommodating portion having an opening surface is formed, and an assembled battery held in the accommodating portion. Of the housing portions, the first inner wall portion and the second inner wall portion on both ends of the assembled battery in the stacking direction communicate with the opening surface, extend perpendicularly to the opening surface, and are parallel to the stacking direction. In a cross-sectional view, a bottomed or bottomless concave first groove portion and second groove portion are formed. Further, the assembled battery is held in the accommodating portion by a holding load acting between the first end portions and the second end portions on both ends in the stacking direction and the first inner wall portion and the second inner wall portion. According to the power supply device of the present invention, the assembled battery is directly mounted on the housing portion of the housing in a compressed state along the stacking direction without using a holder or the like for applying a load to the assembled battery along the stacking direction. can do. In order to mount the assembled battery in the accommodating portion in this way, the assembled battery is mounted together with the arm in the accommodating portion by using the arms provided on both ends in the stacking direction of the assembled battery and applying prepressure along the stacking direction. Need to be housed in. On the other hand, according to the power supply device of the present invention, the first groove portion and the second groove portion formed in the first inner wall portion and the second inner wall portion serve as escape grooves for the arm, so that the assembled batteries are arranged along the stacking direction. It can be mounted directly on the housing of the housing in a compressed state.

（２）本発明の電源装置では、第１溝部及び第２溝部は、開口面から収容部の底面まで延びる。したがって本発明の電源装置によれば、開口面から収容部の底面までアームの逃げ溝を確保できる。よって本発明の電源装置によれば、組電池の積層方向に沿って予圧力を作用させる際には、組電池の上面から下面まで延びるアームを用いることができるので、組電池に与える予圧力を均一化できる。 (2) In the power supply device of the present invention, the first groove portion and the second groove portion extend from the opening surface to the bottom surface of the accommodating portion. Therefore, according to the power supply device of the present invention, an escape groove for the arm can be secured from the opening surface to the bottom surface of the accommodating portion. Therefore, according to the power supply device of the present invention, when applying the prepressure along the stacking direction of the assembled batteries, an arm extending from the upper surface to the lower surface of the assembled batteries can be used, so that the prepressure applied to the assembled batteries can be applied. Can be homogenized.

（３）本発明の電源装置では、組電池は、各単電池セルの２つの電極が平面視で積層方向に沿って列状で配置されるように収容部内に設けられ、また第１溝部及び第２溝部は、平面視では２つの電極列の間に形成されている。したがって収容部に収容されている組電池には、第１溝部及び第２溝部が形成されていない部分である２つの電極に、積層方向に沿った荷重を作用させることができるので、充放電中における組電池の各電極における不具合の発生を抑制できる。 (3) In the power supply device of the present invention, the assembled battery is provided in the accommodating portion so that the two electrodes of each cell are arranged in a row along the stacking direction in a plan view, and also includes the first groove portion and the first groove portion. The second groove portion is formed between two electrode rows in a plan view. Therefore, in the assembled battery housed in the housing portion, a load can be applied to the two electrodes, which are the portions where the first groove portion and the second groove portion are not formed, along the stacking direction, so that during charging and discharging. It is possible to suppress the occurrence of defects in each electrode of the assembled battery in.

（４）複数の単電池セルを積層して構成される組電池には、各単電池セルの電極を接続するバスバーや、各単電池セルのセル電圧を検出するセル電圧センサユニット等、様々な部材が接続される。このため、筐体には、これら組電池に接続される部材を設けるための空間を確保する必要がある。これに対し本発明の電源装置では、組電池を収容部に収容させる際にアームの逃げ溝として用いられる第１及び第２溝部の少なくとも何れかに、組電池に接続される部材を設ける。従って本発明によれば、筐体の容積を小さくできる。 (4) There are various types of assembled batteries, such as a bus bar for connecting the electrodes of each cell, a cell voltage sensor unit for detecting the cell voltage of each cell, and the like, which are formed by stacking a plurality of cell cells. The members are connected. Therefore, it is necessary to secure a space in the housing for providing the members connected to these assembled batteries. On the other hand, in the power supply device of the present invention, a member connected to the assembled battery is provided in at least one of the first and second groove portions used as the escape groove of the arm when the assembled battery is accommodated in the accommodating portion. Therefore, according to the present invention, the volume of the housing can be reduced.

（５）本発明の製造方法は、第１アーム部及び第２アーム部で組電池を挟持し、組電池の第１端部及び第２端部に積層方向に沿った予圧力を加えながら組電池を把持する工程と、第１及び第２アーム部で組電池を把持した状態で、第１及び第２アーム部を開口面側から第１及び第２溝部に挿入する工程と、第１及び第２アーム部による予圧力を解除した後、第１及び第２アーム部を第１及び第２溝部から抜き出す工程と、を備える。本発明の製造方法によれば、第１及び第２内壁部に形成された第１及び第２溝部が上記第１及び第２アーム部の逃げ溝として、組電池を積層方向に沿って圧縮した状態で筐体の収容部に直接搭載することができる。 (5) In the manufacturing method of the present invention, the assembled battery is sandwiched between the first arm portion and the second arm portion, and assembled while applying prepressure along the stacking direction to the first end portion and the second end portion of the assembled battery. The step of gripping the battery, the step of inserting the first and second arm portions into the first and second groove portions from the opening surface side while the assembled battery is gripped by the first and second arm portions, and the first and second steps. A step of extracting the first and second arm portions from the first and second groove portions after releasing the prepressure by the second arm portion is provided. According to the manufacturing method of the present invention, the first and second grooves formed in the first and second inner wall portions serve as relief grooves for the first and second arm portions, and the assembled battery is compressed along the stacking direction. It can be mounted directly on the housing of the housing in the state.

（６）本発明の製造方法は、第１及び第２アーム部を第１及び第２溝部から抜き出した後、これら第１及び第２溝部の少なくとも何れかに、組電池に接続される部材を設ける。これにより、筐体の容積を小さくできる。 (6) In the manufacturing method of the present invention, after the first and second arm portions are extracted from the first and second groove portions, a member connected to the assembled battery is attached to at least one of the first and second groove portions. Provide. As a result, the volume of the housing can be reduced.

本発明の電源装置における構成を説明する平面図である。It is a top view explaining the structure in the power-source device of this invention. 本発明の電源装置における構成を説明する斜視図である。It is a perspective view explaining the structure in the power-source device of this invention. 図１における領域Ａの拡大図である。It is an enlarged view of the area A in FIG. 図２におけるＩＩ−ＩＩ断面図の部分拡大図であって、収容部に組電池が収容された状態における部分拡大図である。FIG. 2 is a partially enlarged view of a cross-sectional view taken along the line II-II in FIG. 組電池に接続される部材の１つであるセル電圧センサユニットの設置例を示す図である。It is a figure which shows the installation example of the cell voltage sensor unit which is one of the members connected to the assembled battery. 第１アーム部及び第２アーム部で予圧力を加えながら組電池を把持した状態を示す図である。It is a figure which shows the state which held the assembled battery while applying the prepressure by the 1st arm part and the 2nd arm part. 組電池を把持した状態で第１アーム部及び第２アーム部を開口面側から第１溝部及び第２溝部に挿入した状態を示す図である。It is a figure which shows the state which the 1st arm part and the 2nd arm part were inserted into the 1st groove part and the 2nd groove part from the opening surface side with the assembled battery held. 第１アーム部及び第２アーム部による予圧力を解除した状態を示す図である。It is a figure which shows the state which released the prepressure by the 1st arm part and 2nd arm part. 第１アーム部における回動駆動及び予圧力を解除した状態を示す図である。It is a figure which shows the state which the rotation drive and the prepressure are released in the 1st arm part. 第１アーム部及び第２アーム部を第１溝部及び第２溝部から抜き出した状態を示す図である。It is a figure which shows the state which pulled out the 1st arm part and the 2nd arm part from the 1st groove part and the 2nd groove part. セル電圧センサユニットを第１組電池に対し接続する手順を示す図である。It is a figure which shows the procedure of connecting a cell voltage sensor unit to the 1st set battery.

以下、本発明の実施形態について図面を用いて説明する。
図１から図３Ｂにより、本実施形態の電源装置１における構成について説明する。
図１は、電源装置１の構成を説明する平面図である。
図２は、電源装置における構成を説明する斜視図である。
図３Ａは、図１における領域Ａの拡大図である。
図３Ｂは、図２におけるＩＩ−ＩＩ断面図の部分拡大図であって、収容部に組電池が収容された状態における部分拡大図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The configuration of the power supply device 1 of the present embodiment will be described with reference to FIGS. 1 to 3B.
FIG. 1 is a plan view illustrating the configuration of the power supply device 1.
FIG. 2 is a perspective view illustrating a configuration of the power supply device.
FIG. 3A is an enlarged view of the region A in FIG.
FIG. 3B is a partially enlarged view of a sectional view taken along line II-II in FIG. 2, which is a partially enlarged view in a state where the assembled battery is housed in the housing part.

まず、本実施形態における電源装置１の概要について説明する。図１及び図２に示すように、電源装置１は、筐体１０と、筐体１０に直接収容される第１組電池３１、第２組電池３２、第３組電池３３及び第４組電池３４と、筐体１０に収容される電源制御部３９と、を有する。電源装置１は、筐体１０の開口側に不図示の蓋部を取り付けた状態で、これを電源としてモータを駆動し走行する不図示の電動車両に搭載される。 First, the outline of the power supply device 1 in the present embodiment will be described. As shown in FIGS. 1 and 2, the power supply device 1 includes a housing 10, a first set battery 31, a second set battery 32, a third set battery 33, and a fourth set battery directly housed in the housing 10. It has 34 and a power supply control unit 39 housed in the housing 10. The power supply device 1 is mounted on an electric vehicle (not shown) that drives and travels a motor using the lid (not shown) attached to the opening side of the housing 10.

第１組電池３１、第２組電池３２、第３組電池３３及び第４組電池３４それぞれは、複数の単電池セル４０を積層した柱状、より具体的には四角柱状の組電池である。以下、複数の単電池セル４０が積層されている方向を積層方向Ｘという。 Each of the first set battery 31, the second set battery 32, the third set battery 33, and the fourth set battery 34 is a columnar, more specifically, a square columnar set battery in which a plurality of cell cells 40 are laminated. Hereinafter, the direction in which the plurality of cell cells 40 are stacked is referred to as the stacking direction X.

また、筐体１０は、平面視で矩形状の第１開口面１６を有する槽状の第１収容部１１と、平面視で矩形状の第２開口面１７を有する槽状の第２収容部１２と、平面視で矩形状の第３開口面１８を有する槽状の第３収容部１３と、平面視で矩形状の第４開口面１９を有する槽状の第４収容部１４と、槽状の第５収容部１５と、を有する。電源制御部３９は、第５収容部１５に収容されている。 Further, the housing 10 has a tank-shaped first accommodating portion 11 having a rectangular first opening surface 16 in a plan view and a tank-shaped second accommodating portion 17 having a rectangular second opening surface 17 in a plan view. 12, a tank-shaped third accommodating portion 13 having a rectangular third opening surface 18 in a plan view, a tank-shaped fourth accommodating portion 14 having a rectangular fourth opening surface 19 in a plan view, and a tank. It has a fifth accommodating portion 15 and a shape. The power supply control unit 39 is housed in the fifth storage unit 15.

第１組電池３１は、積層方向に予圧された状態で第１開口面１６から挿入されると共に、積層方向Ｘ両端側の第１端部３１ａ及び第２端部３１ｂと第１収容部１１のうち対向する第１内壁部１１ａ及び第２内壁部１１ｂとの間で作用する保持荷重によって第１収容部１１内に保持されている。 The first set battery 31 is inserted from the first opening surface 16 in a state of being preloaded in the stacking direction, and the first end portions 31a and the second end portions 31b and the first accommodating portion 11 on both ends of the stacking direction X are inserted. It is held in the first accommodating portion 11 by a holding load acting between the first inner wall portion 11a and the second inner wall portion 11b facing each other.

同様に、第２組電池３２は、積層方向に予圧された状態で第２開口面１７から挿入されると共に、積層方向Ｘ両端側の第１端部３２ａ及び第２端部３２ｂと第２収容部１２のうち対向する第１内壁部１２ａ及び第２内壁部１２ｂとの間で作用する保持荷重によって第２収容部１２内に保持されている。 Similarly, the second set battery 32 is inserted from the second opening surface 17 in a state of being preloaded in the stacking direction, and the first end 32a and the second end 32b and the second accommodation on both ends of the stacking direction X are accommodated. It is held in the second accommodating portion 12 by a holding load acting between the first inner wall portion 12a and the second inner wall portion 12b of the portions 12 facing each other.

また同様に、第３組電池３３は、積層方向に予圧された状態で第３開口面１８から挿入されると共に、積層方向Ｘ両端側の第１端部３３ａ及び第２端部３３ｂと第３収容部１３のうち対向する第１内壁部１３ａ及び第２内壁部１３ｂとの間で作用する保持荷重によって第３収容部１３内に保持されている。 Similarly, the third set battery 33 is inserted from the third opening surface 18 in a state of being preloaded in the stacking direction, and the first end portions 33a and the second end portions 33b and the third end portions 33b on both ends of the stacking direction X are inserted. It is held in the third accommodating portion 13 by a holding load acting between the first inner wall portion 13a and the second inner wall portion 13b of the accommodating portion 13.

また同様に、第４組電池３４は、積層方向に予圧された状態で第４開口面１９から挿入されると共に、積層方向Ｘ両端側の第１端部３４ａ及び第２端部３４ｂと第４収容部１４のうち対向する第１内壁部１４ａ及び第２内壁部１４ｂとの間で作用する保持荷重によって第４収容部１４内に保持されている。 Similarly, the fourth set battery 34 is inserted from the fourth opening surface 19 in a state of being preloaded in the stacking direction, and the first end portions 34a and the second end portions 34b and the fourth end portions 34b on both ends of the stacking direction X are inserted. It is held in the fourth accommodating portion 14 by a holding load acting between the first inner wall portion 14a and the second inner wall portion 14b of the accommodating portion 14.

ここで、各収容部は、第１内壁部及び第２内壁部それぞれに形成されている第１溝部及び第２溝部を有する。
具体的には、第１収容部１１は、第１内壁部１１ａに形成されている第１溝部２１と、第２内壁部１１ｂに形成されている第２溝部２２とを有する。
第２収容部１２は、第２内壁部１２ａに形成されている第１溝部２３と、第２内壁部１２ｂに形成されている第２溝部２４とを有する。
第３収容部１３は、第１内壁部１３ａに形成されている第１溝部２５と、第２内壁部１３ｂに形成されている第２溝部２６とを有する。
第４収容部１４は、第１内壁部１４ａに形成されている第１溝部２７と、第２内壁部１４ｂに形成されている第２溝部２８とを有する。 Here, each accommodating portion has a first groove portion and a second groove portion formed on the first inner wall portion and the second inner wall portion, respectively.
Specifically, the first accommodating portion 11 has a first groove portion 21 formed in the first inner wall portion 11a and a second groove portion 22 formed in the second inner wall portion 11b.
The second accommodating portion 12 has a first groove portion 23 formed in the second inner wall portion 12a and a second groove portion 24 formed in the second inner wall portion 12b.
The third accommodating portion 13 has a first groove portion 25 formed in the first inner wall portion 13a and a second groove portion 26 formed in the second inner wall portion 13b.
The fourth accommodating portion 14 has a first groove portion 27 formed in the first inner wall portion 14a and a second groove portion 28 formed in the second inner wall portion 14b.

そして、上述の第１溝部及び第２溝部は、後述する製造ロボット１００における第１アーム部１１０の第１把持部１１５及び第２アーム部１２０の第２把持部１２５が挿脱される部分である。
詳細には、第１溝部及び第２溝部は、積層方向に圧縮するように予圧した状態で組電池を把持する第１アーム部１１０の第１把持部１１５及び第２アーム部１２０の第２把持部１２５が挿入されると共に、組電池への予圧を解除した第１アーム部１１０の第１把持部１１５及び第２アーム部１２０の第２把持部１２５が抜き出される部分である。 The first groove portion and the second groove portion described above are portions where the first grip portion 115 of the first arm portion 110 and the second grip portion 125 of the second arm portion 120 of the manufacturing robot 100 described later are inserted and removed. ..
Specifically, the first groove portion and the second groove portion are the first grip portion 115 of the first arm portion 110 and the second grip portion 120 of the second arm portion 120 to grip the assembled battery in a state of being preloaded so as to compress in the stacking direction. This is a portion where the first grip portion 115 of the first arm portion 110 and the second grip portion 125 of the second arm portion 120 are extracted while the portion 125 is inserted and the preload on the assembled battery is released.

続けて、本実施形態における電源装置１について詳細に説明する。ここで、以下の説明においては、第１組電池３１及び第１収容部１１の構成や関係等について説明し、他の組電池及び他の収容部についての説明は省略する。他の組電池及び他の収容部については、第１組電池３１及び第１収容部１１についての説明を援用する。 Subsequently, the power supply device 1 in the present embodiment will be described in detail. Here, in the following description, the configuration and relationship of the first assembled battery 31 and the first accommodating portion 11 will be described, and the description of the other assembled battery and the other accommodating portion will be omitted. For other assembled batteries and other accommodating portions, the description of the first assembled battery 31 and the first accommodating portion 11 is incorporated.

図１から図３Ｂに示すように、電源装置１は、筐体１０に形成されている第１収容部１１と、第１収容部１１に直接収容されている第１組電池３１と、を有する。 As shown in FIGS. 1 to 3B, the power supply device 1 has a first accommodating portion 11 formed in the housing 10 and a first set battery 31 directly accommodating in the first accommodating portion 11. ..

第１組電池３１は、複数の単電池セル４０を積層した四角柱状の組電池である。複数の単電池セル４０それぞれは、第１電極４１と、第２電極４２とを有する。第１組電池３１は、各単電池セル４０の２つの電極４１、４２が第１開口面１６に対し垂直な平面視で積層方向Ｘに沿って列状で配置されるように第１収容部１１内に収容配置されている。 The first set battery 31 is a square columnar set battery in which a plurality of cell cells 40 are stacked. Each of the plurality of cell cells 40 has a first electrode 41 and a second electrode 42. The first set battery 31 is a first accommodating portion so that the two electrodes 41 and 42 of each cell 40 are arranged in a row along the stacking direction X in a plan view perpendicular to the first opening surface 16. It is housed and arranged in 11.

第１電極４１は、積層方向Ｘに直交する方向である幅方向Ｙ（図３Ａ参照）における一方側に配置される電極である。複数の単電池セル４０それぞれの第１電極４１は、幅方向Ｙの一方側において積層方向Ｘに沿って並んで配置される。積層方向Ｘに並んで配置される複数の第１電極４１は、積層方向Ｘに正極、負極と交互に並んで配置されている。そして、隣接する正極、負極は不図示のバスバーにより電気的に接続される。 The first electrode 41 is an electrode arranged on one side in the width direction Y (see FIG. 3A), which is a direction orthogonal to the stacking direction X. The first electrodes 41 of each of the plurality of cell 40 cells 40 are arranged side by side along the stacking direction X on one side of the width direction Y. The plurality of first electrodes 41 arranged side by side in the stacking direction X are arranged alternately with the positive electrode and the negative electrode in the stacking direction X. Then, the adjacent positive electrode and negative electrode are electrically connected by a bus bar (not shown).

第２電極４２は、積層方向Ｘに直交する方向である幅方向Ｙ（図３Ａ参照）における他方側に配置される電極である。複数の単電池セル４０それぞれの第２電極４２は、幅方向Ｙの他方側において積層方向Ｘに沿って並んで配置される。積層方向Ｘに並んで配置される複数の第２電極４２も同様に、積層方向Ｘに正極、負極と交互に並んで配置されている。そして、隣接する正極、負極は不図示のバスバーにより電気的に接続される。 The second electrode 42 is an electrode arranged on the other side in the width direction Y (see FIG. 3A), which is a direction orthogonal to the stacking direction X. The second electrodes 42 of each of the plurality of cell 40 cells 40 are arranged side by side along the stacking direction X on the other side of the width direction Y. Similarly, the plurality of second electrodes 42 arranged side by side in the stacking direction X are also arranged alternately with the positive electrode and the negative electrode in the stacking direction X. Then, the adjacent positive electrode and negative electrode are electrically connected by a bus bar (not shown).

また、第１組電池３１は、積層方向Ｘに予圧された状態で第１開口面１６から挿入されると共に、積層方向Ｘ両端側の第１端部３１ａ及び第２端部３１ｂと第１収容部１１のうち対向する第１内壁部１１ａ及び第２内壁部１１ｂとの間で作用する保持荷重によって第１収容部１１内に保持されている。 Further, the first set battery 31 is inserted from the first opening surface 16 in a state of being preloaded in the stacking direction X, and is first accommodated with the first end portions 31a and the second end portions 31b on both ends of the stacking direction X. It is held in the first accommodating portion 11 by a holding load acting between the first inner wall portion 11a and the second inner wall portion 11b of the portions 11 facing each other.

詳細には、第１組電池３１は、積層方向Ｘに圧縮するように予圧された状態で第１開口面１６から第１収容部１１挿入される。そして、第１組電池３１は、第１収容部１１に直接収容される。
第１組電池３１は、積層方向Ｘ一端側の第１端部３１ａと収容部１１の第１内壁部１１ａと間で生じる保持荷重及び、積層方向Ｘ他端側の第２端部３１ｂと収容部１１の第２内壁部１１ｂとの間で生じる保持荷重により第１収容部１１内に保持されている。第１組電池３１は、第１内壁部１１ａ及び第２内壁部１１ｂからの保持荷重により、第１収容部１１に圧縮された状態で保持される。 Specifically, the first set battery 31 is inserted into the first accommodating portion 11 from the first opening surface 16 in a state of being preloaded so as to be compressed in the stacking direction X. Then, the first set battery 31 is directly housed in the first housing section 11.
The first set battery 31 accommodates the holding load generated between the first end portion 31a on the one end side of the stacking direction X and the first inner wall portion 11a of the accommodating portion 11 and the second end portion 31b on the other end side of the stacking direction X. It is held in the first accommodating portion 11 by the holding load generated between the second inner wall portion 11b of the portion 11. The first set battery 31 is held in a compressed state by the first accommodating portion 11 by the holding load from the first inner wall portion 11a and the second inner wall portion 11b.

続けて、図１から図３Ｂに示すように、第１収容部１１は、第１開口面１６を有する槽状の収容部である。第１収容部１１は、第１開口面１６と、積層方向Ｘにおける一方側の第１内壁部１１ａと、積層方向Ｘにおける他方側の第２内壁部１１ｂと、幅方向Ｙにおける一方側の第３内壁部１１ｃと、幅方向Ｙにおける他方側の第４内壁部１１ｄと、第１開口面１６と対向する底面１１ｅと、を有する。 Subsequently, as shown in FIGS. 1 to 3B, the first accommodating portion 11 is a tank-shaped accommodating portion having the first opening surface 16. The first accommodating portion 11 includes a first opening surface 16, a first inner wall portion 11a on one side in the stacking direction X, a second inner wall portion 11b on the other side in the stacking direction X, and a first on one side in the width direction Y. It has three inner wall portions 11c, a fourth inner wall portion 11d on the other side in the width direction Y, and a bottom surface 11e facing the first opening surface 16.

また、第１収容部１１は、第１内壁部１１ａに形成されている第１溝部２１と、第２内壁部１１ｂに形成されている第２溝部２２と、を有する。
第１溝部２１は、後述する製造ロボット１００における第１アーム部１１０（第１把持部１１５）が挿脱される部分である。詳細には、第１溝部２１は、積層方向Ｘに圧縮するように予圧した状態で第１組電池３１を把持する一対のアーム部における一方である第１アーム部１１０（第１把持部１１５）が挿入されると共に、第１組電池３１への予圧を解除した第１アーム部１１０（第１把持部１１５）が抜き出される部分である。 Further, the first accommodating portion 11 has a first groove portion 21 formed in the first inner wall portion 11a and a second groove portion 22 formed in the second inner wall portion 11b.
The first groove portion 21 is a portion into which the first arm portion 110 (first grip portion 115) of the manufacturing robot 100, which will be described later, is inserted and removed. Specifically, the first groove portion 21 is the first arm portion 110 (first grip portion 115) which is one of the pair of arm portions that grip the first set battery 31 in a state of being preloaded so as to compress in the stacking direction X. Is inserted, and the first arm portion 110 (first grip portion 115) that has released the preload on the first set battery 31 is taken out.

同様に、第２溝部２２は、後述する製造ロボット１００における第２アーム部１２０（第２把持部１２５）が挿脱される部分である。詳細には、第２溝部２２は、積層方向Ｘに圧縮するように予圧した状態で第１組電池３１を把持する一対のアーム部における一方の第２アーム部１２０（第２把持部１２５）が挿入されると共に、第１組電池３１への予圧を解除した第２アーム部１２０（第２把持部１２５）が抜き出される部分である。 Similarly, the second groove portion 22 is a portion into which the second arm portion 120 (second grip portion 125) of the manufacturing robot 100, which will be described later, is inserted and removed. Specifically, in the second groove portion 22, one of the second arm portions 120 (second grip portion 125) in the pair of arm portions that grip the first set battery 31 in a state of being preloaded so as to compress in the stacking direction X This is a portion where the second arm portion 120 (second grip portion 125) that has been inserted and released the preload on the first set battery 31 is extracted.

第１溝部２１は、第１開口面１６と連通すると共に当該第１開口面１６に対し垂直に延び、かつ積層方向Ｘに対し平行な断面視では有底の凹状である。
詳細には、第１溝部２１は、第１開口面１６と連通すると共に底面１１ｅ側に延びるように形成されている。本実施形態において、第１溝部２１は、第１開口面１６から底面１１ｅまで延びている（図３Ｂ参照）。 The first groove portion 21 has a bottomed concave shape in a cross-sectional view that communicates with the first opening surface 16 and extends perpendicularly to the first opening surface 16 and is parallel to the stacking direction X.
Specifically, the first groove portion 21 is formed so as to communicate with the first opening surface 16 and extend toward the bottom surface 11e. In the present embodiment, the first groove portion 21 extends from the first opening surface 16 to the bottom surface 11e (see FIG. 3B).

第１溝部２１は、積層方向Ｘにおける一方側に窪んだ凹状に形成されている。本実施形態においては、第１溝部２１は、第１開口面１６から底面１１ｅまでの全体において積層方向Ｘにおける一方側に窪んだ凹状に形成されている。換言すれば、第１溝部２１は、その底部が第１開口面１６から底面１１ｅまで延びる有底の凹状である。
第１溝部２１は、第１アーム部１１０（第１把持部１１５）が挿入可能であると共に、第１組電池３１への予圧を解除するため回動駆動された第１アーム部１１０（第１把持部１１５）を抜き出し可能な凹状の深さ（積層方向Ｘの長さ）及び幅（幅方向Ｙの長さ）に形成されている。 The first groove portion 21 is formed in a concave shape recessed on one side in the stacking direction X. In the present embodiment, the first groove portion 21 is formed in a concave shape recessed on one side in the stacking direction X in the entire area from the first opening surface 16 to the bottom surface 11e. In other words, the first groove portion 21 has a bottomed concave shape whose bottom portion extends from the first opening surface 16 to the bottom surface 11e.
The first arm portion 110 (first grip portion 115) can be inserted into the first groove portion 21, and the first arm portion 110 (first arm portion 110) is rotationally driven to release the preload on the first set battery 31. The grip portion 115) is formed to have a concave depth (length in the stacking direction X) and width (length in the width direction Y) so that it can be pulled out.

また、第１溝部２１は、第１開口面１６に対し垂直な平面視では２つの電極４１、４２の列の間に形成されている。第１溝部２１は、積層方向Ｘに直交する幅方向Ｙにおいて、複数の第１電極４１による列と、複数の第２電極４２による列との間に形成されている（図３Ａ参照）。本実施形態においては、第１溝部２１は、第１収容部１１の幅方向Ｙにおける中央に形成されている。また第１溝部２１の幅方向Ｙに沿った長さＬ１は、第１電極４１と第２電極４２との間の幅方向Ｙに沿った長さＬ２よりも短い。 Further, the first groove portion 21 is formed between the rows of the two electrodes 41 and 42 in a plan view perpendicular to the first opening surface 16. The first groove portion 21 is formed between a row of a plurality of first electrodes 41 and a row of a plurality of second electrodes 42 in a width direction Y orthogonal to the stacking direction X (see FIG. 3A). In the present embodiment, the first groove portion 21 is formed at the center of the first accommodating portion 11 in the width direction Y. Further, the length L1 of the first groove portion 21 along the width direction Y is shorter than the length L2 along the width direction Y between the first electrode 41 and the second electrode 42.

第２溝部２２は、第１開口面１６と連通すると共に当該第１開口面１６に対し垂直に延び、かつ積層方向Ｘに対し平行な断面視では少なくとも一部が有底の凹状である。
詳細には、第２溝部２２は、第１開口面１６と連通すると共に底面１１ｅ側に延びるように形成されている。本実施形態において、第２溝部２２は、第１開口面１６から底面１１ｅまで延びている（図２参照）。 The second groove portion 22 communicates with the first opening surface 16 and extends perpendicularly to the first opening surface 16 and is at least partially concave in cross section parallel to the stacking direction X.
Specifically, the second groove portion 22 is formed so as to communicate with the first opening surface 16 and extend toward the bottom surface 11e. In the present embodiment, the second groove portion 22 extends from the first opening surface 16 to the bottom surface 11e (see FIG. 2).

第２溝部２２は、積層方向Ｘにおける他方側に窪んだ凹状に形成されている。本実施形態においては、第２溝部２２は、第１開口面１６から底面１１ｅまでの間の中間位置から底面１１ｅまで積層方向Ｘにおける他方側に窪んだ凹状に形成されている。換言すれば、第２溝部２２は、第１開口面１６から底面１１ｅまで延びるとともに、第１開口面１６から中間位置までの間では無底の凹状であり、中間位置から底面１１ｅまでの間では有底の凹状である。
第２溝部２２は、第２アーム部１２０（第２把持部１２５）が挿入可能であると共に、第１組電池３１への予圧を解除するため回動駆動された第２アーム部１１２（第２把持部１２５）を抜き出し可能な凹状の深さ（積層方向Ｘの長さ）及び幅（幅方向Ｙの長さ）に形成されている。 The second groove portion 22 is formed in a concave shape recessed on the other side in the stacking direction X. In the present embodiment, the second groove portion 22 is formed in a concave shape recessed on the other side in the stacking direction X from the intermediate position between the first opening surface 16 to the bottom surface 11e to the bottom surface 11e. In other words, the second groove portion 22 extends from the first opening surface 16 to the bottom surface 11e, has a bottomless concave shape between the first opening surface 16 and the intermediate position, and has a bottomless concave shape between the intermediate position and the bottom surface 11e. It has a bottomed concave shape.
The second arm portion 120 (second grip portion 125) can be inserted into the second groove portion 22, and the second arm portion 112 (second) is rotationally driven to release the preload on the first set battery 31. The grip portion 125) is formed in a concave depth (length in the stacking direction X) and width (length in the width direction Y) so that it can be pulled out.

また、第２溝部２２は、第１開口面１６に対し垂直な平面視では２つの電極４１、４２の列の間に形成されている。第２溝部２２は、積層方向Ｘに直交する幅方向Ｙにおいて、複数の第１電極４１による列と、複数の第２電極４２による列との間に形成されている（図２参照）。本実施形態においては、第２溝部２２は、第１収容部１１の幅方向Ｙにおける中央に形成されている。また第１溝部２１と同様に、第２溝部２２の幅方向Ｙに沿った長さは、第１電極４１と第２電極４２との間の幅方向Ｙに沿った長さＬ２よりも短い。 Further, the second groove portion 22 is formed between the rows of the two electrodes 41 and 42 in a plan view perpendicular to the first opening surface 16. The second groove portion 22 is formed between the row of the plurality of first electrodes 41 and the row of the plurality of second electrodes 42 in the width direction Y orthogonal to the stacking direction X (see FIG. 2). In the present embodiment, the second groove portion 22 is formed at the center of the first accommodating portion 11 in the width direction Y. Further, similarly to the first groove portion 21, the length of the second groove portion 22 along the width direction Y is shorter than the length L2 along the width direction Y between the first electrode 41 and the second electrode 42.

また図２に示すように、第１収容部１１の第４内壁部１１ｄには、貫通孔である冷却窓２９が形成されている。この冷却窓２９は、側面視では積層方向Ｘに沿って第１内壁部１１ａ側から第２内壁部１１ｂ側まで延びる矩形状である。従って第１組電池３１を第１収容部１１に収容した状態では、第１組電池３１を構成する全ての単電池セル４０の側面の一部がこの冷却窓２９から露出する。図示しない冷却システムにおいて冷却水が通流する冷却部は、この冷却窓２９を介して第１組電池３１を構成する全ての単電池セル４０に接するように取り付けられる。なお図２に示すように、第２収容部１２の他、第３収容部１３及び第４収容部１４にも同様に、各組電池３２，３３，３４を構成する全ての単電池セル４０の側面の一部を露出する冷却窓２９が形成されている（なお図２では、第３収容部１３及び第４収容部１４に形成されている冷却窓の図示を省略する）。 Further, as shown in FIG. 2, a cooling window 29, which is a through hole, is formed in the fourth inner wall portion 11d of the first accommodating portion 11. The cooling window 29 has a rectangular shape extending from the first inner wall portion 11a side to the second inner wall portion 11b side along the stacking direction X in the side view. Therefore, when the first set battery 31 is housed in the first storage section 11, a part of the side surface of all the cell cells 40 constituting the first set battery 31 is exposed from the cooling window 29. In a cooling system (not shown), a cooling unit through which cooling water flows is attached so as to be in contact with all the cell cells 40 constituting the first set battery 31 through the cooling window 29. As shown in FIG. 2, in addition to the second accommodating portion 12, the third accommodating portion 13 and the fourth accommodating portion 14 also have all the cell cells 40 constituting the assembled batteries 32, 33, 34. A cooling window 29 that exposes a part of the side surface is formed (in FIG. 2, the cooling windows formed in the third accommodating portion 13 and the fourth accommodating portion 14 are not shown).

後に図５を参照して詳細に説明するように、第１溝部及び第２溝部は、第１アーム部１１０及び第２アーム部１２０によって組電池を把持しながら、この組電池を収容部に挿入する際に、これらアーム部１１０，１２０が挿脱される部分である。よって組電池を収容部内に設置した後であれば、これら第１溝部及び第２溝部は、組電池に接続される部材を収容する空間として利用することができる。 As will be described in detail later with reference to FIG. 5, the first groove portion and the second groove portion insert the assembled battery into the accommodating portion while holding the assembled battery by the first arm portion 110 and the second arm portion 120. This is the portion where the arm portions 110 and 120 are inserted and removed. Therefore, after the assembled battery is installed in the accommodating portion, the first groove portion and the second groove portion can be used as a space for accommodating the member connected to the assembled battery.

図４は、第１組電池３１に接続される部材の１つであるセル電圧センサユニット８の設置例を示す図である。セル電圧センサユニット８は、第１組電池３１の上面において積層方向に沿って延びる板状のセンサ本体８１と、センサ本体８１から延びる出力端子が設置される端子台８２と、を備える。図４には、第１組電池３１に接続されるセル電圧センサユニット８のうち端子台８２を第２溝部２２に設けた場合を示すが、本発明はこれに限らない。第２溝部２２には、端子台８２の他、センサ本体８１や、コネクタ、バスバー等を設けてもよい。また上記のような部材を第２溝部２２ではなく、第１溝部２１に設けてもよいし、第１溝部２１及び第２溝部２２の両方に設けてもよい。 FIG. 4 is a diagram showing an installation example of the cell voltage sensor unit 8 which is one of the members connected to the first set battery 31. The cell voltage sensor unit 8 includes a plate-shaped sensor body 81 extending along the stacking direction on the upper surface of the first set battery 31, and a terminal block 82 on which an output terminal extending from the sensor body 81 is installed. FIG. 4 shows a case where the terminal block 82 of the cell voltage sensor unit 8 connected to the first set battery 31 is provided in the second groove portion 22, but the present invention is not limited to this. In addition to the terminal block 82, the second groove portion 22 may be provided with a sensor main body 81, a connector, a bus bar, or the like. Further, the above-mentioned member may be provided not in the second groove portion 22 but in the first groove portion 21, or may be provided in both the first groove portion 21 and the second groove portion 22.

続けて、図５Ａから図５Ｅにより、本実施形態における電源装置１の製造方法について説明する。具体的には、第１アーム部１１０及び第２アーム部１２０を有する製造ロボット１００により第１組電池３１を第１収容部１１に収容させる方法について説明する。 Subsequently, the manufacturing method of the power supply device 1 in the present embodiment will be described with reference to FIGS. 5A to 5E. Specifically, a method of accommodating the first set battery 31 in the first accommodating portion 11 by the manufacturing robot 100 having the first arm portion 110 and the second arm portion 120 will be described.

図５Ａは、第１アーム部及び第２アーム部で予圧力を加えながら組電池を把持した状態を示す図である。
図５Ｂは、組電池を把持した状態で第１アーム部及び第２アーム部を開口面側から第１溝部及び第２溝部に挿入した状態を示す図である。
図５Ｃは、第１アーム部及び第２アーム部による予圧力を解除した状態を示す図である。
図５Ｄは、第１アーム部における回動駆動及び予圧力を解除した状態を示す図である。
図５Ｅは、第１アーム部及び第２アーム部を第１溝部及び第２溝部から抜き出した状態を示す図である。 FIG. 5A is a diagram showing a state in which the assembled battery is gripped while applying prepressure to the first arm portion and the second arm portion.
FIG. 5B is a diagram showing a state in which the first arm portion and the second arm portion are inserted into the first groove portion and the second groove portion from the opening surface side while holding the assembled battery.
FIG. 5C is a diagram showing a state in which the prepressure by the first arm portion and the second arm portion is released.
FIG. 5D is a diagram showing a state in which the rotation drive and the prepressure in the first arm portion are released.
FIG. 5E is a diagram showing a state in which the first arm portion and the second arm portion are extracted from the first groove portion and the second groove portion.

図５Ａに示すように、製造ロボット１００は、第１アーム部１１０と、第２アーム部１２０と、を有する。第１アーム部１１０は、第１元部１１１と、回動駆動部１１２と、第１中間部１１３と、第１把持部１１５と、を有する。第２アーム部１２０は、第２元部１２１と、回動駆動部１２２と、第２中間部１２３と、第２把持部１２５と、を有する。
第１アーム部１１０及び第２アーム部１２０は、不図示の駆動部により垂直方向に移動されると共に、互いの距離を変更するよう開閉移動される。
また、第１アーム部１１０及び第２アーム部１２０は、回動駆動部１１２、１２２により第１把持部１１５及び第２把持部１２５を回動可能に構成される。 As shown in FIG. 5A, the manufacturing robot 100 has a first arm portion 110 and a second arm portion 120. The first arm portion 110 includes a first element portion 111, a rotation driving portion 112, a first intermediate portion 113, and a first grip portion 115. The second arm portion 120 has a second base portion 121, a rotation driving portion 122, a second intermediate portion 123, and a second grip portion 125.
The first arm portion 110 and the second arm portion 120 are moved in the vertical direction by a drive unit (not shown) and are opened and closed so as to change the distance between them.
Further, the first arm portion 110 and the second arm portion 120 are configured so that the first grip portion 115 and the second grip portion 125 can be rotated by the rotation drive portions 112 and 122.

まず、図５Ａに示すように、製造ロボット１００は、第１アーム部１１０の第１把持部１１５及び第２アーム部１２０の第２把持部１２５で第１組電池３１を挟持する。製造ロボット１００は、第１把持部１１５及び第２把持部１２５により、第１端部３１ａ及び第２端部３１ｂに積層方向Ｘに沿った予圧力を加えながら第１組電池３１を把持する。またこの際、図５Ａに示すように、第１把持部１１５及び第２把持部１２５が第１端部３１ａ及び第２端部３１ｂにおいて第１組電池３１の上面３１ａから下面３１ｂまで接するように、第１把持部１１５及び第２把持部１２５によって第１組電池３１を把持する。これにより第１組電池３１は、積層方向Ｘに沿って僅かに圧縮される。 First, as shown in FIG. 5A, the manufacturing robot 100 sandwiches the first set battery 31 between the first grip portion 115 of the first arm portion 110 and the second grip portion 125 of the second arm portion 120. The manufacturing robot 100 grips the first set battery 31 by the first grip portion 115 and the second grip portion 125 while applying prepressure along the stacking direction X to the first end portion 31a and the second end portion 31b. At this time, as shown in FIG. 5A, the first grip portion 115 and the second grip portion 125 are in contact with the first end portion 31a and the second end portion 31b from the upper surface 31a to the lower surface 31b of the first set battery 31. , The first grip portion 115 and the second grip portion 125 grip the first set battery 31. As a result, the first set battery 31 is slightly compressed along the stacking direction X.

続けて、図５Ｂに示すように、製造ロボット１００は、第１アーム部１１０の第１把持部１１５及び第２アーム部１２０の第２把持部１２５により予圧力を加えながら把持した状態で、第１組電池３１を第１開口面１６側から第１収容部１１に挿入する。製造ロボット１００は、第１把持部１１５及び第２把持部１２５により予圧力を加えながら把持した状態で、第１把持部１１５を第１開口面１６側から第１溝部２１に挿入すると共に、第２把持部１２５を第１開口面１６側から第２溝部２２に挿入する。 Subsequently, as shown in FIG. 5B, the manufacturing robot 100 is gripped by the first grip portion 115 of the first arm portion 110 and the second grip portion 125 of the second arm portion 120 while applying prepressure. The set of batteries 31 is inserted into the first housing portion 11 from the first opening surface 16 side. The manufacturing robot 100 inserts the first grip portion 115 into the first groove portion 21 from the first opening surface 16 side while gripping the first grip portion 115 and the second grip portion 125 while applying prepressure, and at the same time, the first grip portion 115 is inserted into the first groove portion 21. 2 The grip portion 125 is inserted into the second groove portion 22 from the first opening surface 16 side.

続けて、図５Ｃ及び図５Ｄに示すように、製造ロボット１００は、第１把持部１１５及び第２把持部１２５による第１組電池３１への予圧力を解除する。具体的には、製造ロボット１００は、第１アーム部１１０における回動駆動部１１２を矢印Ｒ１方向に回動駆動させ、第１把持部１１５を矢印Ｋ１方向に回動移動させると共に、第２アーム部１２０における回動駆動部１２２を矢印Ｒ２方向に回動駆動させ、第２把持部１２５を矢印Ｋ２方向に回動移動させる。 Subsequently, as shown in FIGS. 5C and 5D, the manufacturing robot 100 releases the prepressure on the first set battery 31 by the first grip portion 115 and the second grip portion 125. Specifically, the manufacturing robot 100 rotationally drives the rotation drive unit 112 in the first arm unit 110 in the direction of arrow R1, rotates and moves the first grip portion 115 in the direction of arrow K1, and the second arm. The rotation drive unit 122 of the unit 120 is rotationally driven in the direction of arrow R2, and the second grip unit 125 is rotationally moved in the direction of arrow K2.

これにより、第１把持部１１５及び第２把持部１２５は、第１組電池３１から離間する。予圧力が解除された第１組電池３１は、積層方向Ｘにおいて両端部３１ａ、３１ｂそれぞれが第１内壁部１１ａ及び第２内壁部１１ｂ側に移動するように変形する。そして、第１組電池３１は、第１端部３１ａと第１内壁部１１ａとの間の間に生じた保持荷重及び第２端部３１ｂと第２内壁部１１ｂとの間の間に生じた保持荷重により、第１収容部１１に圧縮された状態で保持される。 As a result, the first grip portion 115 and the second grip portion 125 are separated from the first set battery 31. The first set battery 31 whose prepressure is released is deformed so that both end portions 31a and 31b move toward the first inner wall portion 11a and the second inner wall portion 11b, respectively, in the stacking direction X. Then, the first set battery 31 is generated between the holding load generated between the first end portion 31a and the first inner wall portion 11a and between the second end portion 31b and the second inner wall portion 11b. It is held in a compressed state by the first accommodating portion 11 by the holding load.

続けて、図５Ｅに示すように、製造ロボット１００は、第１アーム部１１０の第１把持部１１５及び第２アーム部１２０の第２把持部１２５を第１溝部２１及び第２溝部２２から引き抜く。 Subsequently, as shown in FIG. 5E, the manufacturing robot 100 pulls out the first grip portion 115 of the first arm portion 110 and the second grip portion 125 of the second arm portion 120 from the first groove portion 21 and the second groove portion 22. ..

続けて、図５Ｆに示すように、セル電圧センサユニット８を第１組電池３１に対し接続する。より具体的には、積層方向に沿って延びるセンサ本体８１を第１組電池３１の上面に設置するとともにセンサ本体８１から延びる図示しない複数の端子を第１組電池３１を構成する各単電池セルの電極に接続するとともに、センサ本体８１の積層方向端部側に設けられた端子台８２を第２溝部２２に設置する。これにより、第１組電池３１が第１収容部１１に直接収容され、本実施形態の電源装置１が製造される。 Subsequently, as shown in FIG. 5F, the cell voltage sensor unit 8 is connected to the first set battery 31. More specifically, the sensor main body 81 extending along the stacking direction is installed on the upper surface of the first set battery 31, and a plurality of terminals (not shown) extending from the sensor main body 81 are connected to each cell that constitutes the first set battery 31. The terminal block 82 provided on the stacking direction end side of the sensor main body 81 is installed in the second groove portion 22 while being connected to the electrodes of. As a result, the first set battery 31 is directly housed in the first housing section 11, and the power supply device 1 of the present embodiment is manufactured.

本実施形態によれば、以下の効果が奏される。
（１）電源装置１は、第１開口面１６を有する槽状の第１収容部１１が形成された筐体１０と、この第１収容部１１内に保持された第１組電池３１と、を備える。筐体１０の第１収容部１１のうち第１組電池３１の積層方向Ｘの両端側の第１内壁部１１ａ及び第２内壁部１１ｂには、それぞれ第１開口面１６と連通するとともにこの第１開口面１６に対し垂直に延び、かつ積層方向Ｘに対し平行な断面視では有底又は無底の凹状である第１溝部２１及び第２溝部２２が形成されている。また第１組電池３１は、積層方向Ｘの両端側の第１端部３１ａ及び第２端部３１ｂと上記第１内壁部１１ａ及び第２内壁部１１ｂとの間で作用する保持荷重によって、第１収容部１１内に保持される。電源装置１によれば、第１組電池３１に積層方向Ｘに沿って荷重を作用させるためのホルダ等を用いることなく、第１組電池３１を積層方向Ｘに沿って圧縮した状態で筐体１０の第１収容部１１に直接搭載することができる。なおこのように第１組電池３１を第１収容部１１に搭載するには、第１組電池３１の積層方向Ｘの両端側に設けられた第１アーム部１１０及び第２アーム部１２０を用いて、積層方向Ｘに沿って予圧力を作用させながら、第１組電池３１を第１アーム部１１０及び第２アーム部１２０とともに第１収容部１１に収容させる必要がある。これに対し電源装置１によれば、第１内壁部１１ａ及び第２内壁部１１ｂに形成された第１溝部２１及び第２溝部２２が上記第１アーム部１１０及び第２アーム部１２０の逃げ溝となるので、第１組電池３１を積層方向Ｘに沿って圧縮した状態で筐体１０の第１収容部１１に直接搭載することができる。 According to this embodiment, the following effects are achieved.
(1) The power supply device 1 includes a housing 10 in which a tank-shaped first accommodating portion 11 having a first opening surface 16 is formed, a first set battery 31 held in the first accommodating portion 11, and a first set battery 31. To be equipped. Of the first accommodating portions 11 of the housing 10, the first inner wall portions 11a and the second inner wall portions 11b on both ends of the first set battery 31 in the stacking direction X communicate with the first opening surface 16 and are connected to each other. The first groove portion 21 and the second groove portion 22 which extend perpendicularly to one opening surface 16 and are concave in a bottomed or bottomless shape in a cross-sectional view parallel to the stacking direction X are formed. Further, the first set battery 31 is subjected to a holding load acting between the first end portions 31a and the second end portions 31b on both ends in the stacking direction X and the first inner wall portion 11a and the second inner wall portion 11b. 1 It is held in the accommodating portion 11. According to the power supply device 1, the housing is in a state where the first set battery 31 is compressed along the stacking direction X without using a holder or the like for applying a load to the first set battery 31 along the stacking direction X. It can be mounted directly on the first accommodating portion 11 of 10. In order to mount the first set battery 31 on the first accommodating portion 11 in this way, the first arm portion 110 and the second arm portion 120 provided on both ends of the stacking direction X of the first set battery 31 are used. Therefore, it is necessary to accommodate the first set battery 31 in the first accommodating portion 11 together with the first arm portion 110 and the second arm portion 120 while applying a prepressure along the stacking direction X. On the other hand, according to the power supply device 1, the first groove portion 21 and the second groove portion 22 formed in the first inner wall portion 11a and the second inner wall portion 11b are escape grooves of the first arm portion 110 and the second arm portion 120. Therefore, the first set battery 31 can be directly mounted on the first accommodating portion 11 of the housing 10 in a state of being compressed along the stacking direction X.

また、本実施形態によれば、電源装置１は、第１組電池３１に予圧力を与えた状態の第１アーム部１１０の第１把持部１１５及び第２アーム部１２０の第２把持部１２５を挿入可能であると共に、予圧力を解除するよう回動駆動可能な第１溝部２１及び第２溝部２２を有する。これにより、電源装置１は、製造ロボットを使用して、第１組電池３１を第１収容部１１に予圧力を与えた状態で直接収容させることが可能である。 Further, according to the present embodiment, the power supply device 1 has a first grip portion 115 of the first arm portion 110 and a second grip portion 125 of the second arm portion 120 in a state where the prepressure is applied to the first set battery 31. It has a first groove portion 21 and a second groove portion 22 which can be rotationally driven so as to release the prepressure. As a result, the power supply device 1 can directly accommodate the first set battery 31 in a state where the first accommodating unit 11 is preloaded by using the manufacturing robot.

また、本実施形態によれば、電源装置１において、第１組電池３１、第２組電池３２、第３組電池３３、及び第４組電池３４は筐体１０に直接搭載されている。これにより、電源装置１は、体積エネルギ密度が向上される。また、これにより、電源装置１は、使用する部品を削減できる。また、電源装置１は、使用する部品を削減することにより、製品コストを削減でき、さらに全体の重量を低減することができる。また、これにより、電源装置１は、全体の体積も低減することができる。 Further, according to the present embodiment, in the power supply device 1, the first set battery 31, the second set battery 32, the third set battery 33, and the fourth set battery 34 are directly mounted on the housing 10. As a result, the power supply device 1 has an improved volumetric energy density. Further, as a result, the power supply device 1 can reduce the number of parts used. Further, the power supply device 1 can reduce the product cost and further reduce the overall weight by reducing the parts used. Further, as a result, the volume of the power supply device 1 can be reduced as a whole.

（２）電源装置１では、第１溝部２１及び第２溝部２２は、第１開口面１６から第１収容部１１の底面１１ｅまで延びる。したがって電源装置１によれば、第１開口面１６から第１収容部１１の底面１１ｅまで第１アーム部１１０及び第２アーム部１２０の逃げ溝を確保できる。よって電源装置１によれば、第１組電池３１の積層方向Ｘに沿って予圧力を作用させる際には、第１組電池３１の上面３１ａから下面３１ｂまで延びる第１アーム部１１０及び第２アーム部１２０を用いることができるので、第１組電池３１に与える予圧力を均一化できる。 (2) In the power supply device 1, the first groove portion 21 and the second groove portion 22 extend from the first opening surface 16 to the bottom surface 11e of the first accommodating portion 11. Therefore, according to the power supply device 1, the escape grooves of the first arm portion 110 and the second arm portion 120 can be secured from the first opening surface 16 to the bottom surface 11e of the first accommodating portion 11. Therefore, according to the power supply device 1, when the prepressure is applied along the stacking direction X of the first set battery 31, the first arm portion 110 and the second arm portion 110 extending from the upper surface 31a to the lower surface 31b of the first set battery 31 Since the arm portion 120 can be used, the prepressure applied to the first set battery 31 can be made uniform.

（３）電源装置１では、第１組電池３１は、各単電池セル４０の２つの電極４１，４２が平面視で積層方向Ｘに沿って列状で配置されるように第１収容部１１内に設けられ、また第１溝部２１及び第２溝部２２は、平面視では２つの電極列の間に形成されている。したがって第１収容部１１に収容されている第１組電池３１には、第１溝部２１及び第２溝部２２が形成されていない部分である２つの電極４１，４２に、積層方向Ｘに沿った荷重を作用させることができるので、充放電中における第１組電池３１の各電極４１，４２における不具合の発生を抑制できる。 (3) In the power supply device 1, in the first set battery 31, the first accommodating portion 11 is arranged so that the two electrodes 41 and 42 of each cell 40 are arranged in a row along the stacking direction X in a plan view. The first groove portion 21 and the second groove portion 22 are provided inside, and are formed between two electrode rows in a plan view. Therefore, in the first set battery 31 housed in the first housing portion 11, the two electrodes 41 and 42, which are the portions where the first groove portion 21 and the second groove portion 22 are not formed, are aligned with the stacking direction X. Since a load can be applied, it is possible to suppress the occurrence of defects in the electrodes 41 and 42 of the first set battery 31 during charging / discharging.

（４）電源装置１では、第１組電池３１を第１収容部１１に収容させる際に第２アーム部１２０の逃げ溝として用いられる第２溝部２２に、第１組電池３１に接続されるセル電圧センサユニット８の一部品である端子台８２を設ける。従って電源装置１によれば、筐体１０の容積を小さくできる。 (4) In the power supply device 1, the first set battery 31 is connected to the second groove portion 22 used as an escape groove of the second arm portion 120 when the first set battery 31 is housed in the first storage portion 11. A terminal block 82, which is a component of the cell voltage sensor unit 8, is provided. Therefore, according to the power supply device 1, the volume of the housing 10 can be reduced.

なお、本発明は上記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれる。 The present invention is not limited to the above embodiment, and modifications, improvements, and the like within the range in which the object of the present invention can be achieved are included in the present invention.

１…電源装置
１０…筐体
１１，１２，１３，１４…収容部
１１ａ，１２ａ，１３ａ，１４ａ…第１内壁部
１１ｂ，１２ｂ，１３ｂ，１４ｂ…第２内壁部
１６，１７，１８，１９…開口面
２１，２３，２５，２７…第１溝部
２２，２４，２６，２８…第２溝部
３１，３２，３３，３４…組電池
３１ａ，３２ａ，３３ａ，３３ａ…第１端部
３１ｂ，３２ｂ，３３ｂ，３４ｂ…第２端部
４０…単電池セル
４１，４２…電極
１００…製造ロボット
１１０…第１アーム部
１１５…第１把持部
１２０…第２アーム部
１２５…第２把持部
Ｘ…積層方向
Ｙ…幅方向 1 ... Power supply device 10 ... Housing 11, 12, 13, 14 ... Accommodating parts 11a, 12a, 13a, 14a ... First inner wall parts 11b, 12b, 13b, 14b ... Second inner wall parts 16, 17, 18, 19 ... Opening surfaces 21, 23, 25, 27 ... 1st groove 22, 24, 26, 28 ... 2nd groove 31, 32, 33, 34 ... Batteries 31a, 32a, 33a, 33a ... 1st end 31b, 32b, 33b, 34b ... 2nd end 40 ... Cell cells 41, 42 ... Electrode 100 ... Manufacturing robot 110 ... 1st arm 115 ... 1st grip 120 ... 2nd arm 125 ... 2nd grip X ... Lamination direction Y ... width direction

Claims (6)

第１開口面を有する槽状の第１収容部及び第２開口面を有する槽状の第２収容部が形成された筐体と、
複数の単電池セルを積層した柱状の第１組電池と、
複数の単電池セルを積層した柱状の第２組電池と、を備え、
前記第１組電池は、積層方向両端側の第１端部及び第２端部と前記第１収容部のうち対向する第１内壁部及び第２内壁部との間で作用する保持荷重によって前記第１収容部内に保持され、
前記第２組電池は、前記積層方向両端側の第３端部及び第４端部と前記第２収容部のうち対向する第３内壁部及び第４内壁部との間で作用する保持荷重によって前記第２収容部内に保持される電源装置であって、
前記第１及び第２内壁部には、それぞれ、前記第１開口面と連通するとともに当該第１開口面に対し垂直に延び、かつ前記積層方向に対し平行な断面視では有底又は無底の凹状である第１溝部及び第２溝部が形成され、
前記第３及び第４内壁部には、それぞれ、前記第２開口面と連通するとともに当該第２開口面に対し垂直に延び、かつ前記積層方向に対し平行な断面視では有底又は無底の凹状である第３溝部及び第４溝部が形成され、
前記第１収容部及び前記第２収容部は、前記積層方向に沿って隣接しており、
前記第２溝部と前記第３溝部とは連通することを特徴とする電源装置。 A housing in which a tank-shaped first accommodating portion having a first opening surface and a tank-shaped second accommodating portion having a second opening surface are formed, and
A columnar first set of batteries in which multiple cell cells are stacked, and
It is equipped with a columnar second set battery in which a plurality of cell cells are stacked .
The first set battery is said to be subjected to a holding load acting between the first end portions and the second end portions on both ends in the stacking direction and the first inner wall portion and the second inner wall portion of the first accommodating portion facing each other. held in the first accommodating section,
The second set of batteries is subjected to a holding load acting between the third and fourth ends on both ends in the stacking direction and the opposing third and fourth inner walls of the second accommodating portion. A power supply device held in the second accommodating portion .
Wherein the first and second inner walls, respectively, the addition to the first opening surface and communicating extending perpendicularly to the first opening surface, and wherein the parallel cross section with respect to the stacking direction of the bottomed or bottomless The concave first groove portion and the second groove portion are formed, and the concave portion is formed .
The third and fourth inner wall portions communicate with the second opening surface, extend perpendicularly to the second opening surface, and are bottomed or bottomless in a cross-sectional view parallel to the stacking direction. A concave third groove and a fourth groove are formed,
The first accommodating portion and the second accommodating portion are adjacent to each other along the stacking direction.
A power supply device characterized in that the second groove portion and the third groove portion communicate with each other. 前記第１収容部のうち前記第１組電池を構成する複数の単電池セルの側面と対向する部分及び前記第２収容部のうち前記第２組電池を構成する複数の単電池セルの側面と対向する部分の少なくとも何れかには、前記積層方向に沿って延びる貫通孔が形成されていることを特徴とする請求項１に記載の電源装置。The portion of the first accommodating portion facing the side surface of the plurality of cell cells constituting the first set of batteries, and the side surface of the second accommodating portion of the plurality of cell cells constituting the second set of batteries. The power supply device according to claim 1, wherein a through hole extending along the stacking direction is formed in at least one of the facing portions. 前記第２溝部と前記第３溝部とを連通する部分には、前記第１組電池に接続される部材が設けられていることを特徴とする請求項１又は２に記載の電源装置。The power supply device according to claim 1 or 2, wherein a member connected to the first set battery is provided in a portion that communicates the second groove portion and the third groove portion. 開口面を有する槽状の収容部が形成された筐体と、
複数の単電池セルを積層した柱状の組電池と、を備え、
前記組電池は、積層方向両端側の第１端部及び第２端部と前記収容部のうち対向する第１内壁部及び第２内壁部との間で作用する保持荷重によって前記収容部内に保持される電源装置であって、
前記第１及び第２内壁部には、それぞれ、前記開口面と連通するとともに当該開口面に対し垂直に延び、かつ前記積層方向に対し平行な断面視では有底又は無底の凹状である第１溝部及び第２溝部が形成され、
前記第１及び第２溝部は、前記開口面から前記収容部の底面まで延び、
前記第１及び第２溝部のうち少なくとも何れかには、前記組電池に接続される部材が設けられていることを特徴とする電源装置。 A housing in which a tank-shaped accommodating portion having an opening surface is formed,
It is equipped with a columnar assembled battery in which a plurality of cell cells are stacked.
The assembled battery is held in the housing by a holding load acting between the first and second ends on both ends in the stacking direction and the opposite first inner wall and second inner wall of the housing. It is a power supply device
The first and second inner wall portions have a bottomed or bottomless concave shape in a cross-sectional view that communicates with the opening surface, extends perpendicularly to the opening surface, and is parallel to the stacking direction, respectively. One groove and a second groove are formed,
The first and second grooves extend from the opening surface to the bottom surface of the housing portion.
Wherein the first and second groove portions at least one of, be that power supplies, characterized in that the member connected to the battery pack is provided. 開口面を有する槽状の収容部が形成された筐体と、
複数の単電池セルを積層した柱状の組電池と、を備え、
前記組電池は、積層方向両端側の第１端部及び第２端部と前記収容部のうち対向する第１内壁部及び第２内壁部との間で作用する保持荷重によって前記収容部内に保持される電源装置の製造方法であって、
前記第１及び第２内壁部には、それぞれ、前記開口面と連通するとともに当該開口面に対し垂直に延び、かつ前記積層方向に対し平行な断面視では有底又は無底の凹状である第１溝部及び第２溝部が形成されており、
第１アーム部及び第２アーム部で前記組電池を挟持し、前記第１及び第２端部に前記積層方向に沿った予圧力を加えながら前記組電池を把持する工程と、
前記第１及び第２アーム部で前記組電池を把持した状態で、前記第１及び第２アーム部を前記開口面側から前記第１及び第２溝部に挿入する工程と、
前記第１及び第２アーム部による前記予圧力を解除した後、前記第１及び第２アーム部を前記第１及び第２溝部から抜き出す工程と、を備えることを特徴とする電源装置の製造方法。 A housing in which a tank-shaped accommodating portion having an opening surface is formed,
It is equipped with a columnar assembled battery in which a plurality of cell cells are stacked.
The assembled battery is held in the housing by a holding load acting between the first and second ends on both ends in the stacking direction and the facing first inner wall and the second inner wall of the housing. It is a manufacturing method of the power supply device to be used.
The first and second inner wall portions have a bottomed or bottomless concave shape in a cross-sectional view that communicates with the opening surface, extends perpendicularly to the opening surface, and is parallel to the stacking direction, respectively. A 1-groove portion and a 2nd groove portion are formed.
A step of sandwiching the assembled battery between the first arm portion and the second arm portion, and gripping the assembled battery while applying prepressure along the stacking direction to the first and second end portions.
A step of inserting the first and second arm portions into the first and second groove portions from the opening surface side while the assembled battery is gripped by the first and second arm portions.
A method for manufacturing a power supply device, which comprises a step of releasing the prepressure by the first and second arm portions and then extracting the first and second arm portions from the first and second groove portions. .. 前記第１及び第２アーム部を前記第１及び第２溝部から抜き出した後、前記第１及び第２溝部の少なくとも何れかに前記組電池に接続される部材を設ける工程をさらに備えることを特徴とする請求項５に記載の電源装置の製造方法。 After the first and second arm portions are extracted from the first and second groove portions, a step of providing a member connected to the assembled battery in at least one of the first and second groove portions is further provided. The method for manufacturing a power supply device according to claim 5.
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